mtd: ubi: introduce barebox specific ioctl to get ubi_num ...

Code wishing to manipulate ubi devices from outside the ubi
layer needs the ubi_num as reference. Add an ioctl to get
the ubi_num from a filedescriptor.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

stdio: replace fprintf(stderr,...) with eprintf ...

We have a shortcut for fprintf(stderr, so use it. This is done to
be able to remove fprintf in the next step.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: ubi: Add function to get ubi number from mtd device ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: ubi: make ubi_detach_mtd_dev ubi internal ...

We want to extend the functionality of the ubi detach function,
but we don't want to change the original detach function to make
UBI updates easier. This adds a barebox specific detach function
which encapsulates the original UBI function. Also this makes the
original ubi detach function internal to ubi.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: Create nand_bitflip command ...

This adds a command to flip bits in a Nand flash. This is useful for
testing purposes to check if flipped bits are corrected and if the
driver returns the correct number of bitflips.

The command writes a configurable number of bitflips to a single Nand
page. If the -r option is not given the results are reproducible, so
calling the same command twice will revert the bitflips.

The command uses the raw read/write Nand operations which are probably
less tested than the regular read/write operations, so the command may
produce surprising results.

As of writing the command has been tested with the GPMI Nand driver and
the imx-nand driver with fixes posted.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

remove now unused libmtd ...

The only user of libmtd was ubiformat which now uses the mtd-peb API,
so remove the now unused libmtd.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ubiformat: Use mtd-peb API ...

This changes ubiformat from the libmtd API to the mtd-peb API. This
makes the libmtd API unnecessary and it can be removed in the next
step.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: Introduce mtd-peb API ...

Code which properly wants to handle Nand flash has to work
in a block based way since blocks are the entities that are erased or
may become bad. The regular mtd API works based on offsets in the device
which introduces unhandy 64bit arithmetics and the requirement to align
buffers to blocks.
This introduces the mtd peb API (PEB for physical Erase Block) which
allows the users to work in a block oriented way. The API is heavily
inspired by the UBI IO layer and in fact can replace parts thereof
later.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

UBI: reimport UBI from Linux v3.10 ...

This is a fresh UBI import from Linux v3.10

This is done mainly to get fastmap support.

This was tested with the i.MX nand driver, the MXS nand driver and
on CFI NOR flash.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

UBI: remove old ubi support ...

To update to the latest UBI support from the Kernel first remove
the old UBI support. Without it the update will be even less reviewable.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

libmtd: rename functions from mtd_* to libmtd_* ...

The kernel nowadays has mtd_read/write and other functions. In
barebox we also have these functions, but with a different prototype,
namely they correspond to the libmtd userspace functions. Rename
these functions to libmtd_* to avoid name clashes with future mtd
updates.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

lib: add barebox version of libmtd ...

Based on mtd-utils and stripped down to needed functionality and
reworked to barebox interfaces.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

lib: add libubigen ...

Imported from mtd-utils and stripped down to needed functionality.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

lib: add libscan ...

Imported from mtd-utils and stripped down to needed functionality.
Add prefix to functions so we have a clean namespace.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: utils: apply macros for message printouts ...

mtd-utils have a few macros for printouts. Provide the wrappers to make
it easier to import them.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ubi: bump ubi-media.h to newest version ...

Needed for ubiformat, we are interested in image_seq especially.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ubi: consolidate ubi-media.h ...

We have two versions in the tree. Use the newer one, and put it into the
mtd directory while we are at it.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Treewide: remove address of the Free Software Foundation ...

The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

barebox ubi changes ...

This adds the layer between barebox and UBI.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

add ubi support from u-boot. Just enough to compile and scan ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>